#room-list{
	float:right;
	width:100px;
	height: 300px;
	overflow:auto;
}
#room-list div{
	border-bottom: 1px solid #eee;
}
#room-list div:hover{
	background-color: #ddd;
}
#msg{
	overflow:auto;
	height: 350px;
}
